Hi, I have migrated to thin pools using partclone. But now that I am using thin pools my system is completely unstable. My swap is not activated : swapon[1004]: swapon: /fedora.swap: read swap header failed systemd[1]: fedora.swap.swap: Swap process exited, code=exited, status=255/EXCEPTION systemd[1]: fedora.swap.swap: Failed with result 'exit-code'. Failed to activate swap /fedora.swap. Dependency failed for Swap. swap.target: Job swap.target/start failed with result 'dependency'. My System logging service is not started: rsyslog.service: Failed with result 'core-dump'. Failed to start System Logging Service. SERVICE_START pid=1 uid=0 auid=4294967295 ses=4294967295 subj=system_u:system_r:init_t:s0 msg='unit=rsyslog comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=failed' rsyslog.service: Scheduled restart job, restart counter is at 1. And device mapper gives me weird messages during startup like: kernel: device-mapper: btree spine: node_check failed: csum 3318704195 != wanted 3318554075 kernel: device-mapper: block manager: btree_node validator check failed for block 220 kernel: device-mapper: btree spine: node_check failed: csum 3318704195 != wanted 3318554075 kernel: device-mapper: block manager: btree_node validator check failed for block 220 kernel: device-mapper: btree spine: node_check failed: csum 3318704195 != wanted 3318554075 kernel: device-mapper: block manager: btree_node validator check failed for block 220 kernel: device-mapper: btree spine: node_check failed: csum 3318704195 != wanted 3318554075 kernel: device-mapper: block manager: btree_node validator check failed for block 220 Also some dracut module is missing: dracut-initqueue[867]: /usr/sbin/thin_check: execvp failed: No such file or directory dracut-initqueue[867]: WARNING: Check is skipped, please install recommended missing binary /usr/sbin/thin_check! In short my system has gone to hell. This all started when I did a fstrim like this: sudo fstrim -v / And it returned an input/output error. My logical volumes were marked with two 'XX', I don't know what that means. After that I restarted. What can I do to get my system back to normal ? Please help. -- Regards, Sreyan Chakravarty